libc: Use printf and snprintf across codebase

tf_printf and tf_snprintf are now called printf and snprintf, so the
code needs to be updated.

Change-Id: Iffeee97afcd6328c4c2d30830d4923b964682d71
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
diff --git a/drivers/st/clk/stm32mp1_clk.c b/drivers/st/clk/stm32mp1_clk.c
index 1dc08d8..f0bf363 100644
--- a/drivers/st/clk/stm32mp1_clk.c
+++ b/drivers/st/clk/stm32mp1_clk.c
@@ -17,6 +17,7 @@
 #include <mmio.h>
 #include <platform.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <stm32mp1_clk.h>
 #include <stm32mp1_clkfunc.h>
 #include <stm32mp1_dt.h>
@@ -1344,7 +1345,7 @@
 	for (i = (enum stm32mp1_pll_id)0; i < _PLL_NB; i++) {
 		char name[12];
 
-		tf_snprintf(name, sizeof(name), "st,pll@%d", i);
+		snprintf(name, sizeof(name), "st,pll@%d", i);
 		plloff[i] = fdt_rcc_subnode_offset(name);
 
 		if (!fdt_check_node(plloff[i])) {